The subject of study was the specifc institutional education of anarchists - the Siberian group of anarchist-communist operating in the city of Irkutsk. The authors were based on the civilizational methodology using general scientifc and concrete historical research methods: analysis and synthesis, induction and deduction, comparative historical and problem-chronological, as well as periodization methods, retrospective and promising analysis. On the basis of the frst-introduced into the scientifc turnover of archival historical sources, the authors received new results, based on which they made evidence -based conclusions about the laws and development features of a large Siberian anarchist group. The authors came to the conclusion that the studied group played a leading role in the development of the anarchist movement in the Irkutsk province, being a unifying center for the anarcho-communist groups of Siberia for some time. Basically, the radical-revolutionary, extremist nature of its political actions and intentions is substantiated. The connections of the studied group with similar formations in the Irkutsk province and the country as a whole are traced. The ideological direction of the group as a whole is defned as anarcho-communist, its interaction with other areas of anarchism, as well as political parties of the socialist spectrum-socialists-revolutionaries and social democrats, is traced. Anarchists' attempts were given to establish relations with soldiers and other segments of the population of Irkutsk and the province by establishing agitation and propaganda work. The forms and methods of the struggle of group members with the existing state system and the methods used to counteract state bodies against the antistate, extremist group are considered. All the material of the article leads to a general conclusion that it is impossible to achieve the main goal of anarchists-the communist society by the radical and extremist forms and methods of struggle used by them.